Linking phase-field and finite-element modeling for process-structure- property relations of a Ni-base superalloy

Bradley S. Fromm, Kunok Chang, David L. McDowell, Long-qing Chen, Hamid Garmestani

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

Establishing process-structure-property relationships is an important objective in the paradigm of materials design in order to reduce the time and cost needed to develop new materials. A method to link phase-field (process-structure relations) and microstructure-sensitive finite-element (structure-property relations) modeling is demonstrated for subsolvus polycrystalline IN100. A three-dimensional experimental dataset obtained by orientation imaging microscopy performed on serial sections is utilized to calibrate a phase-field model and to calculate inputs for a finite-element analysis. Simulated annealing of the dataset realized through phase-field modeling results in a range of coarsened microstructures with varying grain size distributions that are each input into the finite-element model. A rate-dependent crystal plasticity constitutive model that captures the first-order effects of grain size, precipitate size and precipitate volume fraction on the mechanical response of IN100 at 650 °C is used to simulate stress-strain behavior of the coarsened polycrystals. Model limitations and ideas for future work are discussed.

Original languageEnglish (US)
Pages (from-to)5984-5999
Number of pages16
JournalActa Materialia
Volume60
Issue number17
DOIs
StatePublished - Oct 1 2012

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Metals and Alloys
  • Polymers and Plastics
  • Electronic, Optical and Magnetic Materials

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